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KMID : 1001220150170010033
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Journal of the Korean Society of Digital Medical Imaging Technology
2015 Volume.17 No. 1 p.33 ~ p.41
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Usefulness of the High B-value DWI in Brain Tumors
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Kim Jin-Tae
Byun Jae-Hoo
Park Yong-Sung
Lee Lae-Gon
Hwang Sun-Kwang
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Abstract
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This study attempts to examine the clinical usefulness of High b-value DWI (diffusion weighted imaging) for brain tumors with an edema. Subjects were seven patients selected from 65 patients who received an MRI scan for suspected encephalopathy and confirmed diagnosis at our hospital from February to July 2015 (male: 7, average age : 66 years old). As test equipment, 3.0T MR System (ACHIEVA Release, Philips, Best, The Netherlands) and 8Channel SENSE Head Coill were used. DWI checks on the use of the variable TR 5460ms, TE 132ms, Slice Thickness 4mm, gap 1mm, Slice number
29 is, 3D T1WI is TR 8.4ms, TE 3.9ms, matrix size 240 × 240, Slice can set 180 piecesIt was. b value of 0, 1,000, 2,000 s/mm2 with DWI acquisition and 3D T1WI enhancement five minutes after the Slice Thickness 3mm, gap 0mm to reconstruct the upper face axis (MPR TRA CE) was. As for the experiment, in b-value 1,000 and 2,000 images, SNR and the lesion at the lesion site and CNR in the normal site opposite to the lesion are measured. WW(window width) and WL(window level) are made equal in MRICro software, and the volume of the lesion is measured from each of b-value and MPR TRA CE image. Using SPSS ver. 1.8.0.0 Mann Whitney-test was analyzed for SNR and CNR, while Kruskal-Wallis test was analyzed for volume.
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KEYWORD
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Diffusion weighted imaging, High b-value, SNR, CNR
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